Aluminum oxide Grinding wheels

March 28, 2014 – 02:21 pm

Wheel characteristics

The CGW grinding wheel is made up of abrasive grains held together by a bond. By varying the properties of the abrasive, the type of bond, and the structure of the wheel, it is possible to produce innumerable grinding characteristics.

The abrasive:
There are two main categories of grain: Aluminium Oxide - For grinding high tensile steel, i.e. hardened or high speed steels. Silicon Carbide - Low tensile steels, i.e. cast iron and non-ferrous metals.

Bond:
The function of the bond is to hold the abrasive grains in a definite spacing to form a product of defined size and shape.The most commonly used bonds are:
Vitrified - The rigidity of this bond is excellent for precision grinding and fast stock removal.
Resin - Organic bond makes the wheel tougher, suited for heavy-duty operations, high operating speeds, rough grinding, and cut-off applications.

Structure -
Structure is defined according to the spacing of the grain in the wheel, held in position by the bond. The closer the grains (the smaller the pores), the denser the structure. The farther apart the grains(the larger the pores), the more open the structure. CGW Grain

Grade marking.pdf
CGW's grain types:A - Brown Aluminium Oxide: The most common of all grains. This grain is used for heavy-duty general purpose work.SA (94A) - Semi-Friable Aluminium Oxide: Its principal use is in cylindrical grinding wheels and centreless grinding wheels. It can be used to grind both
soft and hard steels.
WA - White Aluminium Oxide: The high friability of this grain gives it the characteristic of fast and cool cutting. Suitable for light grinding of steels of all kinds, particularly on tool and die steel.

AS - Ceramic Aluimium Oxide: Ceramic grain, blended with white aluminium oxide, creates a wheel with maximum grinding performance and life. Excellent for form and corner holding. Available in AS1, AS3, and AS5.

PA - Pink Aluminium Oxide:

Good general purpose wheel. The grain is tough but friable, excellent on large surface areas.

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It's Interesting...

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Twitter Activity

@RT_America @RT_com Not to mention all the aluminium oxide from chemtrails fueling the fire.
Tue, 30 June 2015 06:52 PM

@PercyVarco I never, ever wear sunscreen. Rubbing nano sized particles of Aluminium Oxide into your hide is NUTS as far as I can see.
Tue, 30 June 2015 07:35 PM